Innovatively Continuous Mass Production Couette-taylor Flow: Pure Inorganic Green-Emitting Cs4PbBr6 Perovskite Microcrystal for display technology

Young Hyun Song; Seung Hee Choi; Won Kyu Park; Jin Sun Yoo; Seok Bin Kwon; Bong Kyun Kang; Sang Ryul Park; Young Soo Seo; Woo Seok Yang; Dae Ho Yoon

doi:10.1038/s41598-018-20376-3

Innovatively Continuous Mass Production Couette-taylor Flow: Pure Inorganic Green-Emitting Cs₄PbBr₆ Perovskite Microcrystal for display technology

Sci Rep. 2018 Jan 31;8(1):2009. doi: 10.1038/s41598-018-20376-3.

Authors

Affiliations

¹ Department of Nanotechnology and Advanced Material Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul, 05006, Republic of Korea.
² School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.
³ Electronic Materials and Device Research Center, Korea Electronics Technology Institute, Seongnam, 463-816, Republic of Korea.
⁴ Electronic Materials and Device Research Center, Korea Electronics Technology Institute, Seongnam, 463-816, Republic of Korea. wsyang@keti.re.kr.
⁵ School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea. dhyoon@skku.edu.

Abstract

We report for the first time the mass production of Cs₄PbBr₆ perovskite microcrystal with a Couette-Taylor flow reactor in order to enhance the efficiency of the synthesis reaction. We obtained a pure Cs₄PbBr₆ perovskite solid within 3 hrs that then realized a high photoluminescence quantum yield (PLQY) of 46%. Furthermore, the Cs₄PbBr₆ perovskite microcrystal is applied with red emitting K₂SiF₆ phosphor on a blue-emitting InGaN chip, achieving a high-performance luminescence characteristics of 9.79 lm/W, external quantum efficiency (EQE) of 2.9%, and correlated color temperature (CCT) of 2976 K; therefore, this perovskite is expected to be a promising candidate material for applications in optoelectronic devices.

Publication types

Research Support, Non-U.S. Gov't